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Blockchain Security: Fundamentals and Key Concepts
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What is the primary purpose of a blockchain?
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A
To provide a secure and transparent way to store and transfer data.
💡 Explanation:
A blockchain is a distributed database that maintains a continuously growing list of records, called blocks. Each block contains a timestamp, a list of transactions, and a cryptographic hash of the previous block. This structure makes it difficult to tamper with data on the blockchain, as any changes would require changing all subsequent blocks.